The E44 was an electric, rectifier-equipped locomotive built by General Electric for the Pennsylvania Railroad (PRR) between 1960 and 1963. The PRR used them for freight service on the Northeast Corridor. They continued in service under Penn Central and Conrail until Conrail abandoned its electric operations in the early 1980s. All were retired by the mid-1980s. One is preserved at the Railroad Museum of Pennsylvania.Source: https://en.wikipedia.org/wiki/Pennsylvania_Railroad_class_E44